Visitors look at Gustav Klimt's Beethoven Frieze, one of the country's most famous artworks, at the Secession museum in Vienna March 5, 2015. Austria is ready to return the artwork to heirs of its former owners if a review supports their claim they were forced to sell it at a knock-down price. The case, which will test Austria's laws on restitution of looted art, centres on the Lederer family, Jews who fled to Switzerland when Nazi Germany annexed Austria in 1938 and seized the family's extensive art collection. Picture taken March 5, 2015. REUTERS/Leonhard Foeger (AUSTRIA - Tags: SOCIETY)